计算机技术与发展2016，Vol.26Issue(5)：149-152,4.DOI:10.3969/j.issn.1673-629X.2016.05.032
基于遗传算法的LTE网络定位服务时延估计
Time-delay Estimation of Positioning Service in LTE Networks Based on Genetic Algorithm
摘要
Abstract
In order to reduce the interference of the NLOS environment to the wireless location system,a time-delay estimation scheme based on genetic algorithm is proposed. This scheme utilizes the characteristics of heuristic stochastic search ability of genetic algorithm, and the delay of LOS-path under NLOS environment can be obtained. Firstly,it uses the time of arrival and the angle of arrival as the o-riginal information in genetic algorithm. Secondly,according to the original information,it constructs an adaptive fitness function. Finally, the solution of the objective function is calculated,and the delay of LOS-path is obtained. The simulation shows that compared with the traditional time-delay estimation based on generalized cross correlation,the proposed scheme can effectively reduce the ambient noise un-der NLOS environment. On the premise of the objective function being able to describe the environment,genetic algorithm has the ability of fast solving the dominant solution under the complex environment,and it can meet the requirements of positioning service response speed and positioning accuracy for various kinds of position-service-based applications.关键词
遗传算法/定位服务/时延估计/LTE/NLOSKey words
genetic algorithm/positioning service/time-delay estimation/LTE/NLOS分类
信息技术与安全科学引用本文复制引用
丘觐玮,余天尧,戴伟强,王宝全,陆音..基于遗传算法的LTE网络定位服务时延估计[J].计算机技术与发展,2016,26(5):149-152,4.基金项目
国家自然科学基金资助项目(61271236) （61271236）
南京邮电大学大学生创新训练计划省级重点项目(SZDG2013012) （SZDG2013012）
